Adds liniting into the workflow (#3082)

* initial linting of src

* fix indent to 2 spaces

* Removes unnecessary rules

* ignore spec folder for now

* Spec linting

* Fix spec indent

* nits

* nits

* no no-empty rule

spec/Uniqueness.spec.js

@@ -1,6 +1,5 @@
 'use strict';
 
-var request = require('request');
 const Parse = require("parse/node");
 let Config = require('../src/Config');